Boiler appliance



Marrffi, 1923.

H. E. HEIM BOILER APPLIANCE Filed Dpc. 19, 1921 INVEN TOR.

Patented lifter. h, 123.

art ste BOILER APPLIANCE.

, Application filed December 19, 1921. Serial Ito. 523,408.

T all whom. it may concern: w

1 Be it known that I, HnNRY Earn HEIM. a citizen of the United States,residing at Portland, in the county of Multnomah and State of Uregon,have invented a new and useful Boiler Appliance, otwhich the followingis a specification.

-My invention relates to improvements in boiler appliances, particularlyto oulet fittings for hot water boilers, in which a tube reaches fromthe fitting into the hot water.

In the customary type of hot water boilers the cold water is sent fromthe bottom of theboiler througha heating coil of some description andthen returned to the topof the boiler. Since the service pipe alsoissues trom the top, it follows that the first user is enabled to drawof? the hottest water, leaving an insuificient supply for the seconduser, unless the landlord or head of the family goes to the expenseotheating the coils anew. The objects otmy invention are to prevent theboiler from bein robbed of its hottest water, but rather to turnish alarge quantity of tepid water from a comparatively small amount of hotwater.

Another object is to design a fitting which is complete in itself, thatis, which avoids the work and inconvenience of combining a varyingnumber of crosses, Ts, elbows and nipples at acertain 'point in theinstallation.

Further objects and advantages are to .be found in the construction andarrangement of parts as will be described hereinafter.

ll attain these objects with the mechanism illustrated in theaccompanying drawing,in whicha Fig. 1 is a side elevation of a fittingwith the hot water supply entering the boiler through the fitting. 1

Fig. 2, is a vertical cross section through Fi 1.

l ig. 3 is a modified form of the fitting used in cases where the hotwater enters the boiler otherwise than through the fitting.

Fig. 4 is a perspective view of a smooth tube.

Fig. 5 is a perspective view of a spirally corrugated tube on a somewhatsmaller scale. c

Similar numerals refer to similar parts throughout the several views.

This invention is intended as animprovement on a fitting for which apatent application Was filed by me on October 24, 1921,

complished, and, though I have shown the under the title Boilerappliance, and Serial Number 509,860.

The body portion of the fitting is designated by the numeral 1. Thethreaded end 2 is screwed into the boiler. Connection with the servicepipe 3 is accomplished by means of the union i and the gasket 5. Theupturned elbow 6 for the relief valve forms an integral part of the bodyportion. It the fitting is intended to serve as a hot water inlet also,proper provisions for connection with the union 7 and the gasket 8 aremade the same as in the case of the service pipe 3 The inlet may beopposite the elbow 6 or at right angles thereto.

In all cases, however, a tube 9 reaches from the fitting a shortdistance into the water. This tube may be smooth or spirally corrugated.Formerly the tube was screwed into the fitting from the bottom, so thatrepair to the tube in case of corrosion necessitated an unscrewing ofthe entire fitting. In my present invention the tube is provided withathreaded shoulder 10 and a slot 11 in the upper tube walls, so that a renewal may be efiected fromthe top with a screw driver after the servicepipe 3 has been disconnected. The threaded shoulder 10 as well as thecorresponding female thread in the fitting are slightly tapered so thatthe tube cannot get lost by being screwed too far. A smalhole 12establishes communication between the inside and the outside of thetube.

With the introduction of my tube 9, the hot water at the top of theboiler cannot be withdrawn, but rather serves to impart a gentle warmthto the water which flows through the tube and is drawn from the coolerzones at the bottom. The small quantity of hot water entering throughthe hole 12 merely aids in warming the stream of water flowing insidethe tube without diminishing appreciably the quantity of hot waterremaining at the outside of the tube.

My invention also avoids watenhammering in the service pipe, as anysteam at the outside of the tube and entering the inside through thesmall hole would be quickly condensed to water and thereby becomeharmless.

Having thus described my invention it will be seen that my objects havebeen acpreferred form of construction, I reserve to myself the right tomake minor changes,

providing 1 do not violate the spirit and I princlple of my invention.

1' claim: I 1. In a boiler ZLPPllADQQ tlN-E combination of a fittingcomprising a body portion having; a vertical canal, said canal beingconstricted the upper end, a tube screwed note the constricted portionof the canal and extending below the lower end of the fitting, said tubehaving a threaded shoulder at the upper end, a slot across'the upperedges, and a hole in the well below the threaded shoulder.

2. in a boiler applian'i-e the combination ofa fitting comprising a bodyportion havieezsso cured in the vertical canal and extending below thelower end of the fitting, a tapering, threaded shoulder at the upper endof the tube said, tube having a small hole below the threaded shoulderand being of smaller diameter than the vertical canal in the bodyportion.

3. In a boiler-appliance, the combination of a fitting comprising a bodyportion having a vertical canal, said canal being constricted andthreaded at the upper end a tube having a threaded shoulderand a hole inthe Wall below the shoulder, said tube being capable of insertion fromthe top of the fitting, a relief elboW atthe side of the body portionand a hot Wfiilfili inlet; at the side oiflhe body portion, said hotWater inlet, lorining an lntegral part of the body pen tion and beingadapted to connect with a heating pipe by means of a union and gasket.Signed by me at Portland, Oregon, this 14th day of December, 1921.

HENRY EARL HEI'M.

